Examine source code of WebAppFind

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "short_name": "__MSG_extensionShortName__",
  "description": "__MSG_extensionDescription__",
  "version": "3.4.4resigned1",
  "author": "Brett Zamir",
  "homepage_url": "https://github.com/brettz9/webappfind",
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self';",
  "optional_permissions": [
    "bookmarks",
    "browserSettings",
    "clipboardRead",
    "clipboardWrite",
    "cookies",
    "geolocation",
    "idle",
    "notifications",
    "topSites",
    "webRequestBlocking"
  ],
  "$$$comment-optional-permissions": "`background`, `contentSettings`, `debugger`, `management`, `pageCapture` were giving console warnings",
  "permissions": [
    "nativeMessaging",
    "<all_urls>",
    "contextMenus",
    "activeTab",
    "tabs",
    "webNavigation",
    "history",
    "webRequest",
    "unlimitedStorage",
    "alarms",
    "browsingData",
    "contextualIdentities",
    "downloads",
    "downloads.open",
    "find",
    "identity",
    "menus",
    "pkcs11",
    "privacy",
    "proxy",
    "sessions",
    "storage",
    "tabHide",
    "theme"
  ],
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "default_locale": "en",
  "browser_action": {
    "browser_style": true,
    "default_area": "navbar",
    "default_icon": "/executable-builder/executable.svg",
    "default_title": "__MSG_browser_action_title__",
    "default_popup": "/executable-builder/index.html"
  },
  "background": {
    "page": "/lib/background.html"
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true,
    "chrome_style": true,
    "open_in_tab": false
  },
  "applications": {
    "gecko": {
      "id": "webappfind@brett-zamir.me",
      "strict_min_version": "63.0"
    }
  }
}